Northern Alliance, loose coalition of militias in Afghanistan who opposed the first Taliban regime from 1996 until the regime’s fall in 2001. The alliance was instrumental in toppling the Taliban after receiving support from the United States in October 2001.
In 1992, following the withdrawal of the Soviets as the Afghan War (1978–92) came to an end, Afghan guerrilla groups known as the mujahideen toppled the Soviet-backed government. In its stead, some of the leaders of the diverse and multiethnic mujahideen set up an interim government. But the conflicting interests of those disparate factions rendered that government ineffective. Militias and warlords throughout the country vied for control of their respective localities, leading to high levels of violence and extortion. The Taliban, a predominantly Pashtun faction that emerged in Kandahār province in the mid-1990s, swept through southern Afghanistan in a bid to pacify it. In 1996 it overtook Kabul, the country’s capital.
Members of the government fled north to Mazār-e Sharīf, where prominent leaders of the ousted government, including the ousted president Burhanuddin Rabbani and his minister of defense Ahmad Shah Masoud, formed the Northern Alliance soon after. When the Taliban seized control of Mazār-e Sharīf in 1998, the alliance was confined largely to the Panjshīr Valley in the northeast, which remained the only major holdout to Taliban rule.
In 2001 the tide turned in favour of the alliance. On September 11, 2001, members of al-Qaeda, a militant Islamist organization operating out of Afghanistan, hijacked and crashed four U.S. jetliners on U.S. soil, killing thousands of civilians (see September 11 attacks). On October 7, after the Taliban failed to meet U.S. demands to dismantle al-Qaeda and extradite its leaders, the United States and its allies launched an intensive bombing campaign against the Taliban and provided significant logistical support to the Northern Alliance. The Taliban fled Kabul in mid-November and surrendered Kandahār city, its last stronghold, on December 6. Weeks later an interim government was installed, and the loose alliance subsequently dissolved into its respective factions. Several of the alliance members became prominent figures in the Islamic Republic of Afghanistan, which was formally installed in 2004 and ruled Afghanistan until 2021.